Contact: Rachel Hoover
NASA/Johnson Space Center
Caption: Japan Aerospace Exploration Agency astronaut Koichi Wakata, Expedition 38 flight engineer, conducting a session with a pair of bowling-ball-sized free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites (SPHERES) aboard the International Space Station.
Usage Restrictions: NASA
Related news release: Smart SPHERES are about to get a whole lot smarter